Dead-bolt lock



FIG. 1 is a perspective view of a dead-bolt lock showing my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a right side elevation thereof;

FIG. 4 is a left side elevation thereof;

FIG. 5 is a rear elevation thereof; and

FIG. 6 is a top plan view thereof, the bottom being identical in appearance. 

The ornamental design for a dead-bolt lock, as shown and described. 